Vortex Diamondback Tactical 4-16x44 FFP (EBR-2C in MOA or MRAD Reticle)

XD™ Lens Elements 

Extra-low dispersion (XD) glass increases resolution and color fidelity, resulting in crisp, sharp images.
XR™ Fully Multi-Coated 
Proprietary coatings increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.
First Focal Plane Reticle 
Scale of reticle remains in proportion to the zoomed image. Constant subtensions allow accurate holdover and ranging at all magnifications.
Glass-Etched Reticle 
Allows for intricate reticle design. Protected between two layers of glass for optimum durability and reliability.

CONSTRUCTION
Tube Size 
30 mm diameter provides maximized internal adjustment and strength.
Aircraft-Grade Aluminum 
Constructed from a solid block of aircraft-grade aluminum for strength and rigidity.
Waterproof 
O-ring seals prevent moisture, dust and debris from penetrating for reliable performance in all environments.
Fogproof 
Nitrogen gas purging prevents internal fogging over a wide range of temperatures.
Shockproof 
Rugged construction withstands recoil and impact.
Hard Anodized Finish 
Highly durable hard-coat anodization provides a low-glare matte surface and helps camouflage the shooter's position.

INTERNAL MECHANISM DESIGN
Precision-Force Spring System 
Uses premium components in the erector-spring system to ensure maximum repeatability and ease of adjustment.
Precision-Glide Erector System 
This system ensures the components in the zoom lens mechanism glide smoothly and cleanly through all magnification ranges.

CONVENIENCE
Fast Focus Eyepiece 
Allows quick and easy reticle focusing.
Magnification Rib 
The raised rib on the magnification ring facilitates fast magnification changes in the heat of action.